<html>
  <body>
    <script src="../../build/node_modules/react/umd/react.development.js"></script>
    <script src="../../build/node_modules/react-dom/umd/react-dom-unstable-fire.development.js"></script>
    <script src="https://unpkg.com/babel-standalone@6/babel.js"></script>
    <div id="container"></div>
    <script type="text/babel">
      ReactFire.render(
        <h1>Hello World!</h1>,
        document.getElementById('container')
      );
    </script>
  </body>
</html>